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What happens when the top layers of a glacier move faster then the bottom layers?
you are so stupid
Why does the top of a glacier move faster than the bottom?
The top of a glacier moves faster than the bottom because of the effects of gravity. As the glacier flows downhill, the ice at the top is able to slide over the layers beneath it, causing it to move quicker. This phenomenon is known as internal deformation.
What is the lower end of a glacier called?
The area that is melting faster than it is accumulating is the "Zone of Ablation." The very bottom end of a glacier is typically called its "foot."
Which parts of glaciers and its triburitaries moves most quickly?
Glacier speed is not constant across the glacier. The top half of the glacier moves faster than the bottom, presumably because of friction. The sides also flow slower than the middle, also because of friction. The middle of the glacier at the equilibrium line flows fastest, the head and terminus flow slower. Above the equilibrium line the glacier grows faster than it melts; this is called the accumulation zone. Below the equilibrium line, the glacier melts faster than it grows; this is called the ablation zone.
When a glacier retreatsis it moving backwards?
A glacier is a 'river' of ice. In cold places where precipitation falls as snow rather than rain, the snow thickness builds up and up and forms a field of ice as its compacts. Masses of ice are not solid but flow very slowly down hill under the force of gravity. This ice flow is called a glacier. Glaciers flow down hill and as they do so it gets warmer and the ice at the tip of the glacier melts (they turn into rivers of water). If the climate is cold then this melting happens less fast than the snow is supplying new ice at the top and the bottom of the glacier will advance (the glacier gets longer). If the climate is warming then the melting happens faster than the snow is supplying new ice and the bottom of the glacier will retreat back up towards the snow/ice field (the glacier gets shorter) All of earths glaciers are currently getting shorter - the Glaciers are in retreat. This is because earths climate is getting slightly warmer.
2 What does it mean to say a glacier is retreating?
The glacier is melting faster than it is sliding down the valley.
What happens to a glacier when its edge melts more quickly than the new ice replaces it?
the glacier starts to become smaller and smaller because the ice and snow are melting faster than they can replace it, this is one of the many effects of global warming
When new snow is added to a glacier faster than ice and snow melt does the glacier get larger or smaller?
When new snow is added to a glacier faster than the rate at which ice and snow melt, the glacier gets larger because the accumulation of new snow exceeds the loss from melting. This process contributes to glacier growth and expansion.
Which part of valley glacier moves the fastest?
The center of a valley glacier moves the fastest due to reduced friction from surrounding valley walls and terrain. This faster flow in the center can cause the glacier to stretch and crack, creating crevasses.
Where does glacier ice move quickly and slowly within a glacier?
Glacier ice moves more quickly in the center of the glacier where there is less friction with the valley walls. It moves more slowly along the sides and bottom of the glacier where there is more friction with the rock and sediment beneath it.
What force moves a glacier downhill?
Glaciers can slide down slope for several reasons. First, a glacier is made of ice, which is frozen water. Liquid water is slippery. That is important to remember. Second, gravity is pulling on them making them want to move downhill. Third, when ice is put under a lot of pressure, it can melt. The pressure above the bottom of the glacier can cause some melting on the bottom layer. That can make the glacier slide. Fourth, the sun shining on the top of the glacier can make the top of the glacier melt. The water from that melting can go to the bottom of the glacier and help lubricate the bottom. That can help it slide. Mountain glaciers are always sliding downhill. Snow replenishes glaciers and adds ice to the top. If glaciers melt faster than they are replenished they vanish. Some mountain glaciers have vanished within the last 100 years. A few more are likely to vanish in the next decade.
How do glaciers flow?
glaciers move slowly but when theres alot of rain the water and the glaciers move faster
